根据句意，用所给动词的适当形式填空。

小题1:To keep safe, everyone                   (tell) to wear a seat belt in the car now.

小题2:If we cut down the trees, floods ______________ (wash) our village away.

小题3:The microphone is used to                 (make) your voice sound louder.

小题4:All the team members were seen _____________ (train) hard when I passed the room.

小题5:Mr. Dong                  (live) here since he was born.

生长发育在12岁左右达到顶峰的组织器官是（）

A.上颌骨

B.下颌骨

C.颅底骨

D.淋巴

E.睾丸